Karen Hagen

Karen Hagen

Licensed Real Estate Salesperson

Social Media

Karen on Instagram
Karen on Facebook
Karen on LinkedIn
KMS Partners Website


Joined KMS Partners in 2019, with 7 years prior experience


500M+ Sales Volume over the Past 3 Years


#1 Team in Westport, Weston, Fairfield, Wilton & Norwalk

#28 Medium-sized team in the United States based on sales volume
(2021 WSJ's Real Trends The Thousand)

Team Statistics

400+ New/Repeat/Referral Clients over the Past 3 Years


Buyer's Agent, Listing Agent,
Relocation, Single Family Homes


SUNY, Oneonta
BS, Economics

About Karen
In guiding Fairfield County buyers and sellers to success for nearly 10 years, Karen Hagen has garnered extensive market expertise while building meaningful relationships with her clientele and community. Karen’s impressive talents and track record are due, in part, to her innate ability to connect with clients, listen to and understand their goals and build a clear plan to achieve their objectives. Satisfied clientele rave about her responsiveness, professional service, tenacious negotiation skills and priceless guidance. Karen understands that buying or selling a home can be daunting, so she continually strives to minimize stress, maximize value and make the entire process as enjoyable as possible.

Karen's real estate career began in 2012 when she quickly rose to the top five percent of agents worldwide at her previous firm. Before real estate, she spent nearly a decade with the National Football League working on player programs, international activities and corporate sponsorships. She credits the experience of working with professional athletes and high-level executives with forming her diplomatic, solutions-oriented style. Laser-focused and patient, Karen is the calm at the center of the storm. Whether in football or real estate, her successful business philosophy is simple — treat others the way you want to be treated. It's no surprise she's cultivated a tremendously loyal repeat and referral client base.

Karen and her husband, Colin, raised their two children in Weston and now reside in Westport. Always active in her community, Karen’s interests expanded as her children grew. As a former chapter president, she currently serves as a visitor host for the BNI’s Westport Entrepreneurs. On a broader scale, Karen is a founding member of the National Association of Divorce Professionals (NADP). Active in NADP, Karen works alongside other licensed professionals learning about their roles in the divorce process. Through this association, she has gained a better understanding of the unique challenges presented by divorce and can more effectively serve clients facing this situation. An outdoor enthusiast, Karen spends her free time on the courts or walking and hiking with her husband and their Golden Retriever, Brody.

Client Testimonials

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"Karen is the consummate professional. As a first time buyer, she LISTENED to our needs and didn't try to sway us to a more expensive property. The seller was extremely difficult and Karen handled the issues and negotiations flawlessly. Even though I was purchasing a modest home she treated us as multi-million dollar clients." - Amy

"Karen was absolutely phenomenal in every way possible. Extremely professional, courteous and went above and beyond to ensure a pleasant buying experience. I would recommend her without reservation all your buying and selling needs." - Robert

"Karen is an amazing realtor. She found us our dream home and always responded to questions and texts quickly. Do t hesitate to give her . Karen, thanks again everything!"

"Karen is top notch. She took the time to fully understand our needs and helped us find the perfect home. She was patient, diligent, and supportive throughout the entire process. She's been an amazing resource us and I would highly recommend her to anyone. We will always go back to Karen and refer her to friends and family! "

"I have worked with other realtors in the past and Karen is the real deal. I'm so happy that my friend's mom recommended her. She helped me purchase my home. She is professional, friendly, and genuine. Highly recommend!"